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//===- GNUArchiveReader.h -------------------------------------------------===//
//
// The MCLinker Project
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef MCLD_GNU_ARCHIVE_READER_H
#define MCLD_GNU_ARCHIVE_READER_H
#ifdef ENABLE_UNITTEST
#include <gtest.h>
#endif
#include "mcld/LD/ArchiveReader.h"
#include "mcld/Support/Path.h"
#include <llvm/ADT/OwningPtr.h>
#include <vector>
#include <string>
namespace llvm
{
class MemoryBuffer;
}
namespace mcld
{
class MCLDInfo;
class Input;
class InputTree;
/** \class GNUArchiveReader
* \brief GNUArchiveReader reads GNU archive files.
*/
class GNUArchiveReader : public ArchiveReader
{
private:
struct ArchiveMemberHeader;
struct SymbolTableEntry;
public:
explicit GNUArchiveReader(MCLDInfo &pLDInfo, LDReader::Endian endian)
: m_pLDInfo(pLDInfo),
m_endian(endian)
{ }
~GNUArchiveReader()
{ }
/// Read an archive and extract each member in.
/// Construct the coresponding Input for each member.
InputTree *readArchive(Input &input);
bool isMyFormat(Input &input) const;
LDReader::Endian endian(Input& pFile) const;
private:
/// set up the archive, including
/// first, read symbol table
/// second, read extended file name which is used in thin archive
InputTree *setupNewArchive(Input &pInput, size_t off);
/// parse the archive header, and return the member size
size_t parseMemberHeader(llvm::OwningPtr<llvm::MemoryBuffer> &mapFile,
off_t off,
std::string *p_Name,
off_t *nestedOff,
std::string &p_ExtendedName);
void readSymbolTable(llvm::OwningPtr<llvm::MemoryBuffer> &mapFile,
std::vector<SymbolTableEntry> &pSymbolTable,
off_t start,
size_t size);
private:
MCLDInfo &m_pLDInfo;
LDReader::Endian m_endian;
};
} // namespace of mcld
#endif
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